Ireland vs Japan: Carbon intensity of energy
Ireland
208.43 grams of CO₂ per kilowatt-hour
in 2024
Japan
208.5 grams of CO₂ per kilowatt-hour
in 2024
Ireland rank
106th
Japan rank
105th
Carbon intensity of energy over time
- Ireland
- Japan
How they compare
Japan currently reports 208.5 grams of CO₂ per kilowatt-hour against 208.43 grams of CO₂ per kilowatt-hour in Ireland, a difference of 0.07 grams of CO₂ per kilowatt-hour.
The two have swapped places 4 times across 60 shared years of data; in 1965 it was Japan ahead.
Ireland ranks 106th and Japan ranks 105th of 204 countries.
Across the 7 decades both report, Ireland averaged higher in 6 and Japan in 1.
Head to head by decade
| Decade | Ireland | Japan | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 199.75 grams of CO₂ per kilowatt-hour | 226.5 grams of CO₂ per kilowatt-hour | 26.75 grams of CO₂ per kilowatt-hour | Japan |
| 1970s | 267.33 grams of CO₂ per kilowatt-hour | 225.25 grams of CO₂ per kilowatt-hour | 42.08 grams of CO₂ per kilowatt-hour | Ireland |
| 1980s | 272.8 grams of CO₂ per kilowatt-hour | 214.93 grams of CO₂ per kilowatt-hour | 57.87 grams of CO₂ per kilowatt-hour | Ireland |
| 1990s | 274.41 grams of CO₂ per kilowatt-hour | 212.68 grams of CO₂ per kilowatt-hour | 61.73 grams of CO₂ per kilowatt-hour | Ireland |
| 2000s | 254.73 grams of CO₂ per kilowatt-hour | 205.27 grams of CO₂ per kilowatt-hour | 49.45 grams of CO₂ per kilowatt-hour | Ireland |
| 2010s | 234.58 grams of CO₂ per kilowatt-hour | 227.8 grams of CO₂ per kilowatt-hour | 6.78 grams of CO₂ per kilowatt-hour | Ireland |
| 2020s | 219.16 grams of CO₂ per kilowatt-hour | 215.35 grams of CO₂ per kilowatt-hour | 3.81 grams of CO₂ per kilowatt-hour | Ireland |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher carbon intensity of energy, Ireland or Japan?
- Japan, at 208.5 grams of CO₂ per kilowatt-hour against 208.43 grams of CO₂ per kilowatt-hour in Ireland as of 2024.
- What is the difference in carbon intensity of energy between Ireland and Japan?
- 0.07 grams of CO₂ per kilowatt-hour, with Japan ahead.
- How many years of comparable data are there for Ireland and Japan?
- 60 years are reported by both, from 1965 to 2024.
- How do Ireland and Japan rank globally for carbon intensity of energy?
- Ireland ranks 106th and Japan ranks 105th of 204 countries.
- Where does this data come from?
- Global Carbon Budget (2025) and other sources – with major processing by Our World in Data, published as Carbon intensity of energy. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Fossil carbon dioxide (CO₂) emissions per unit of total energy supply, measured in grams of CO₂ per kilowatt-hour.